Just looking for some friendly help from the more experienced.

I have had multiple cages over the last few years but still have yet to find a good match for me. Saw the cobra and it looks fairly nice and like it would be a good fit. I really don't want to just go and buy one based off of measurements alone and was hoping for some advice moving forward. Measurements are ~4.5 length while flaccid. The main thing I have struggled with is a good ring size but I will take help on all aspects if you are willing.