I had a reasonable test ride on an equilibrium 20 today, despite the too wide bars, too long stem and knife of a gents saddle

it was pretty comfy, I didn't avoid the holes, bumps and metal work and it seemed comfortable over the rough Wimbledon streets, probably more than the avail despite the fit not being great. 54cm frame. However, although the 105 groupset shifted really well, I did have a struggle to get the bike to stop and rather overshot the asl at a red light!

I rely heavily on the cross levers on the giant as I have the same issue with the tiagra brakes. The guy at
Evans said that the tektro calipers aren't the best but I think I simply can't get adequate braking through the levers from the hood. SRAM on the pave works much better for me as the hoods are better suited to smaller hands and shorter fingers. Although I am not small, some of my proportions are ultimately female! The other thing is that surprisingly the genesis doesn't have proper rack mounting points below the seat post, which is a pain although not insurmountable.
Now I could just stick with the giant at least until the spring, I could get the genesis and have cross levers fitted when the stem and bars are sorted, I could switch to SRAM but that will be costly...or I could get someone to build to spec from the frame up?
Realistically, how much would all the bits be, frame and fork around £450? SRAM groupset, wheels, tyres, tubes, stem, bars etc? Complete bike is somewhere between £1150-£1300, plus say another £100 for bars, tape, stem.
Never easy this bike stuff!