Clomid is enough on it's own. It's the strongest serm for hpta restart there is. 50/50/25/25 seems to be a popular dosing scheme, but nothing wrong with going 50/50/50/50.
8 Weeks is a good lenght for Andros. 330 mg is a decent dose for both. If lethargy gets bad, could try upping the 4-Andro. There's allways the Epiandro/Androsterone (PH's to DHT) to kind of complete the Andro stack, but it's not necessary. The 1-Andro will do most of the work.
The cycle support products I've used have a bit more stuff in them than the Protex, but it has some good ingridients and should be fine with this cycle. If blood pressure gets high, you could try Carditone. Or Hawthorn berry, Celery seed, Coq 10, grape seed..
Some cortisol lowering product in pct is never a bad idea, but can't really say how important it is. I usually have some kind of cort control in pct.
Is this your first cycle? Probably won't be your last. Getting bloods and checking your hormonal panel would be a good idea before cycle, so you can check them again after cycle and see how you recovered and what is happening in your body before deciding to go for another run.
Oh yeah and even though you probably won't need any with this stack, you should allways have an AI on hand when running something hormonal. Exemestane is a good choice and can be found from the board sponsors like MAResearchems for example.