Who says you can't run an orals only cycle?
Man, that's all we had back in the day!
My first cycle was dbol only and worked like a champ.
OP: orals aren't the most healthy option but you sure as hell can do it. If you want to run dbol for 6 weeks you should be fine. Do a low dose like 25mg. Just do a PCT and take some milk thistle on cycle.
Anavar is milder and won't give you the same results but is much safer if that is a concern.
Stay away from prohormones but that's just my opinion.