Im assuming this is a cut/recomp?
My opinion, I wouldnt bother bumping the osta from 15 to 30mg. 15mg is plenty given its main benefit, ie anti-catabolic, especially given the other compounds youre using. Bumping the dose wont really add much significant other than increasing negatives (more taxing on hPTA, more impact on lipids, etc).
Id be inclined to invest in more LGD. Like, run it at 7.5mg for the first week to assess any acute negative responses (BP, reflux, etc) and then all going well bump it to 15mg for the remaining 6+ weeks.
Also, if you havent run epistane before, some guys find 30mg pretty meh, where 40+ is a good sweet spot even in a stack.
Lastly, be prepared for potential lethargy. Youre looking at a pretty dry run. Ive always found topical dhea helpful here, but you may be sweet without anything else.
Hope your diet and water intake is top notch too.