Oral cycles can be just fine - kidneys are not an issue.
You want to have yuor LFT's (liver function tests) done before and immediately after yuor cycle, as well as general blood tests - SMA12, cholesterol, trigylycerides, etc.
Things like d-bol, anadrol, etc are going to add size and strength, but water retention can be a big issue, and with it, high blood pressure. Yuo're going to want to use nolvadex and an aromatase inhibitor with these.
Yuo need to do some homework and figure out a cycle for yuorself. Board rules are that yuo cannot ask for a cycle to be created or designed for yuo, and any such efforts will be deleted. Yuo might start with something like Building the Perfect Beast by ALR. Not all-inclusive, but nothing is.