6 feet Obelisk would work great for any of the Austins you mentioned. Otherwise 6 feet is just too short for any real climber in a warm zone. Quicksilver here is already 6 feet tall 7 months after being planted and would probably overgrow your obelisk by the 2nd year. Good luck with your project, I bet it will look beautiful.

Oliva Austin makes such a lovely and densely shaped bush it would be a shame to put it on an obelisk, although you probably could. I don't know about GC or LoS, but Quicksilver is probably too stiff for an obelisk and Eden is too much of a monster and would over grow it and eat it for lunch one day when you weren't watching.

I think either Golden Celebration or Lady of Shallot would work well. Olivia is more shrub like, and Eden would eat the obelisk! (Not sure about Quicksilver.) And, a copper obelisk sounds very pretty, and like it would look nice with either GC or LoS.

I agree that Olivia, though fairly large, is quite shrub like. But Golden Celebration can get just plain huge (8-9 feet tall), and could swamp an obelisk, too. It would take a couple of years, so you would have time to make changes. GC does have fairly flexible canes that can be trained nicely, and it can take a good pruning to keep its size down once it has reached maturity. One of my favorite roses, Golden Celebration is a continuous bloomer in my garden. Here is GC with another favorite of mine, Boscobel. The second photo shows a cane I played with by weaving it around porch railings. Diane

The contrast of the Clematis might be nice with your roses. If you stick with a rose, you might choose one with a more delicate 'twining' growth like Perfumed Breeze or Renae.

Tina all those pics above are fabulous however we get different results, vastly different. Because you mention front yard I assume you want year round performance. This is my experience in Dallas.

Golden C- wonderful in spring horrible in summer. ugly cream color, few petal that shatter and crisp, fewer flowers (but less is best because they are so ugly).

Lady of S - for me slow to establish but nice in spring and fall. Summer- blooms pretty in early morning gone or crispy by afternoon which can look trashy. Mine is large and in back yard so OK but I would not want it in my front.

Olivia R - my choice for a front garden. You should be able to keep it in good form on that 6' structure. It blooms from ground up, gets bushy but controllable, rarely without blooms even in our heat. Flowers smaller and paler in heat but in sprays so still looks nice and still maintains a pink coloration. This is a good rose for us, I spray but it could survive fine without it. Not splashy but consistent and pretty year round also smells lovely. Watch for thrips in spring- they just love our light colored smelly guys. Use Conserve it won't hurt the lady bugs or you.

Eden- I have not grown but BenT said primarily a spring bloomer for us. Not much happening in summer. If Ben's is any guide it might get too large for a 6', I think his was on 8' and still sprawling sideways. It is a beauty in spring see Ben's picks on HMF.

Quicksilver- I have it new this year and I like it. The edges get crisp sooner than I would like but mine is a new plant. I think a 6' support may be small as this thing will probably get giant in our climate. You can double check this with another,

Another to consider is Evelyn. To me it is splashier. They are much larger blooms than Olivia spring or summer. Mine is alway alway always in flower and heat bothers her little or not at all. She would be my first choice for a front yard. A great year round producer of beauty. Hard to find a rose that looks as good in late July as in spring. Don't they all look lovely in spring!

Olivia in spring

Evelyn in garden several years ago also in spring but looks this good year round just a few less blooms but still more than most. Also her leaves are super dark green. She also maintain her color year round and flower form. Wish I had a close up for you she is so good I just take her for granted. As you know she was named after the fragrance and she has a good vase life for an Austin.

And to add to confusion here is Paul Neuron in June still pushing them out.

Also I have heard wonderful things about Lady in Red for our climate if you could take a red rose.