A test base would mean running test alongside bro, so for a OH cycle of 4-6 weeks test prop would be best bet. No pint in running test E, C for such short durations. It is advised but certainly not 100'5 essential as a lot of guys run their PH stacks without, however you will experience less sides and greater gains by adding one.
If you don't want to pin, break the law or do not access to real AAS than the Transaderm from Ruthless supplements is an excellent alternative. Its a transdermal product that will rub into your skin and act as a test base for your cycle. It provides a much greater serving volume per pump than other similar items, and dries much faster. 1 bottle should complete a cycle whereas you may need several bottles of the others, as they are tiny lol.
If you or anybody else needs any help or advise on how to use it/stack it in, or if you want any big discounts on Transaderm ! Than feel free to drop me a PM and ill do my best to help out