Sounds like you're about to set sail into the deep ocean not even knowing how to patch a sail.....
But. My advice:
Start a on cycle support/liver detox 3-5 days before cycle. Make sure it includes the compound TUDCA, as it is proven to effectively maintain and restore the liver, where as compounds like Milk Thistle, NAC, and other popular ones that are likely found in GNC type products don't have hard medical backings to prove their effectiveness. TUDCA does. (750-1,000mg p/day)
On cycle support will aim to help things like blood pressure, prostate stress, lipid profile, liver support....but in reality, the effectiveness is nothing to rely upon. If you want to run one, do it. If not, then whatever. TUDCA and nutrition is the best on cycle support you can have.
DO NOT drink alcohol
Get a pharma grade AI on hand (aromasin preferably) as any OTC product is likely just arimistane and this will not suffice as an AI should any problems occur. Seriously.
Any PCT other than a SERM is an immediate no go for starting this cycle. An OTC PCT is like putting out a barn fire with a garden hose. It will not cut it. This is asking for post-cycle gyno, loss of gains, low T side effects, etc. Especially with a product like Alpha Size. Need need need a SERM. Get Clomid and dose at 50/50/25/25mg daily for weeks 1-4, or Nolva and dose 20/20/10/10 respectively.