I would prefer a type 3, it would be easier to remove from the bush because you cut it back to 12" to 18" every year. Don't get it too close to the bush or it won't get enough water & sun.

My favorites - Madame Julia Correvon, Polish Spirit, Alba Luxurians, Huldine, Rouge Cardinal, Jackmanii, I can go on and on......

Katie

I grew 2 clematis - an alpina and a macropetala - through my old lilac. The clematis would bloom before the lilac leafed out so they were easy to see. And they didn't require pruning. My lilac was quite a bit larger than the OP's, so cutting back and removing the old vines from a type 3 would be more of a chore than I wished. However, pruning back even a type 3 is optional once established and I found that practice to be more efficient when growing these through larger woody shrubs and trees. The bare, leggy lower stems of the unpruned clems blended into the stems/trunks of the shrub support while the top of the vine was free to peek out of the canopy and flower at will. I did exactly the same thing with C. tangutica growing through a large apple tree -- you can't imagine how many questions I got about what kind of tree that was with all those bright yellow flowers blooming through summer!