Reading about no muscle involvement is good. Often, a second TURB is done to be sure margins are correct. The pathology report should indicate that but, a second is still not a bad idea. It sounds like you have some additional doubts. Many of us would encourage a second opinion for peace of mind, "fresh eyes" and a confirmation of the first DX is often agreed upon. Does it also sound like you have had a recurrence? Perhaps another reason for a second opinion. You have some time as you heal from your first TURB.
Blue light is an improvement from what I have read but, not imperative. The bladder wash is usually done to kill any possible re-seeding from the TURB. My URO used a blue dye to light up any cancer cells which would have been a similar situation to blue light.
My cancer was papillary (mushroom/stalk-like). So, it is a different type. It did grade as high grade hence the BCG regimen that I was treated with.
One last take. Many patients will pass clots and a small amount of "old" blood from the TURB 10-17 days post. My URO warned me about this otherwise I would have freaked out as it happened to me. It depends on how much digging they do.