The key is not to get a silly fast motor, especially on a 2wd - it'll just be undriveable.
You asked about some of my stuff for sale - you just missed out on one combo that would have been perfect, but you seem to be on the right track. If you want something that's not a bank breaker, but will serve if you decide to race, I think the best value ESC right now is the
Hobbywing Xtreme Stock.
The cheapest UK source I know of are
Giantcod.
Marry it up to a 11.5T (I still have 2!) or a 13.5T motor, and you'll have plenty of power, especially if you tinker with the boost settings. It suggests not using a 10.5T - I suspect it could manage, just not with everything cranked up, or perhaps not in a 4wd buggy (again with boosted settings).