You have all the tools to beat T, so that's good.
PD, Cup/Val, Ghoulem, DD, GF/Walla, Santa/Vlad, all these combinations work.
Regarding the base, any corner base will work. The 2016 guides are still accurate. The corner base has not necessarily improved in 2017.
HBM T is all about having strong heroes that make it to round 5, and luck. If your heroes can consistently get to T-5, then you are fine. If your heroes are dying before they get to T-5, you are not ready.
Once you can get to T-5 consistently, it's all luck. You need to run T over and over till you get spawns that don't destroy all your buildings. There is really no way to avoid this, unless you have a stupid amount of Scatter. Good luck!