That is a very well thought out plan. Good for you. That plan should keep new weeds from starting, but you still have the old ones to dig out. Killing grassy weeds in grass is hard to do. You can spot spray with something like Grass b Gon, but the overspray will kill the surrounding bermuda. If you can shield the surrounding grass with cardboard or something you could spray the grassy weeds out.

I'm really interested in the EGO equipment you bought. I've gone all electric, but a few of my pieces are corded. I'm interested in the mower and string trimmer. Im relatively happy with my Black and Decker battery mower and trimmer, but I could be happier with the trimmer. Please let us know if you're happy with the EGO brand.

More important than the mowing (low) and fertilizing is watering. Deep and infrequent is the mantra for watering. This is for all turf grass all over the place. Deep means 1 inch all at one time. Put some cat food or tuna cans around the yard, and time how long it takes your sprinkler(s) to fill all the cans. Memorize that time. That will be the time you water from now on. My hose, sprinkler and water pressure takes 8 full hours to fill the cans. Your time will likely be less. I like gentle watering. As for watering frequency, that depends on the daytime air temperature. With temps in the 90s, deep water once per week. With temps in the 80s, deep water once every 2 weeks. With temps in the 70s, deep water once every 3 weeks. With temps below 70, deep water once a month. Note that you have to keep up with quickly changing temps in the spring and fall. This deep and infrequent schedule works in Phoenix and in Vermont, so it should work for you. The reason for deep and infrequent is to grow deeper, more drought resistant roots and to allow the soil to dry completely at the surface for several days before watering again. If it rains, reset your calendar to account for the rainfall.

Won't the Prodiamine interfere with the seeding in May?

Sulfentrazone is a great active ingredient for selective control of our Houston area weeds in Bermuda, very little collateral damage. I too am interested in hearing how a battery powered mower handles the unique cutting requirements of Bermuda! I've been loving my ego blower, that thing rocks

You definitely did think through that plan. The feedback I would give is I'm not sure about overseeding the Bermuda. There should be no need to do that. Based off of how much you plan to fertilize, it should spread. Also, the Milo app in January may not give you much benefit because of the cooler temps. I generally don't apply any organic fertilizer (Milo or otherwise) unless my grass is breaking dormancy. Just my preference