MK just run as long as you can afford it (the longer the better, and no less than 3 months). 10-20mg is ideal range, start low, taper up.
Osta (personally I hate it, but if you're going to...) run at 20-30mg for 8 weeks or so. A little longer or shorter is fine as well.
Supports - Must haves (on cycle):
AI - at a minimum an OTC like SNS Inhibit-E, but I would suggest having a pharma one on hand. Osta has a history of causing estrogen issues for many people.
Cycle support - CEL Cycle assist for a basic, all-around support. No real need for TUDCA or anything extreme for osta.
Must haves (PCT):
SERM - nolva or clomid at standard doses. 20/20/10/10 (nolva) or 50/50/25/25 (clomid)
AI - same as above
Cortisol control - SNS Reduce XT (for me at least, cortisol is always a big issue in pct)
Fun adders - as funds allow (pct):
T booster - CEL M-test or bulks like SNS bulbine, daa, etc
Natty Anabolics - SNS Xgels, CEL Epi-Plex, PES Anabeta Elite, etc.