Should my friend who has high bloodpressure and both kydneys functioning at 64% be taking the following:?

Lisinopril has renal protective effects over and above its use as an antihypertensive. A thiazide diuretic is a mainstay in treating hypertension, doing a better job than most antihypertensives of decreasing the risks of developing cardiovascular disease. Thiazides are also often needed in people who take the other medications, because they'll produce edema in a lot of the people taking either of the other drugs, much less both. It isn't at all unusual for people to need a third antihypertensive, and a calcium-channel blocker is a reasonable choice if a third is needed. It may seem to you like overkill, but I notice you didn't post a record of your friend's blood pressure readings, so I'm guessing you're simply reacting to the idea of three drugs, rather than looking at the balance of things as regards his blood pressure. Maybe the lercainidipine is needed, and maybe it isn't, but we (and likely you) don't have enough information to be second-guessing.

depends what is causing the renal failure.

I'd have the GFR, Creatinine, Albumin and BUN monitored regularly while on those drugs if the patient is already at 64%.

A thiazide or loop diuretic, CA channel blocker and ACE inhibitor like you named, is the poly-pharmacy most commonly given to treat uncomplicated heart failure/Hypertension.