Hi, i have the above regulators and i'm currently diving in the tropical region. However, in the coming September, i will be studying in UK, to be specific, Uni of Newcastle Upon Tyne, will the above regs do me fine? Also wondering if i can wear 2 wetsuits..1 3mm S Tek and perhaps another 5mm or 7mm 1 size bigger wetsuit over the first with hood or something..is that good enough for cold water diving? Intending to dive bout twice a month in uk since i will be there for 3-4 yrs. Any inputs?