welcome to shinyitis where you want to buy all new shiny things
wow, 50 a day. i was on 20-30 a day for 37 years and that was enough.
congratz on cutting down so much.
now have you already received the kit or just ordered it. wish you had joined first and asked here before buying.
the R80 is quite old now and 2 people at work had them and dint rate them at all. doesnt mean its not a good mod though but ive not tried it so cant help on that.
this is a much newer version and half the price with double the power
https://www.ecigone.co.uk/mod-shop/regulated-mods/smok-g150-kit
next time before buying on amazon check out our recommended suppliers first as usually always cheaper. hardware on post 5
POTV Vendors & Recommended E Liquid Suppliers
i dnt build coils so i cant help on which is the best or easiest to build rda.
for subohming to create big clouds you need to use low nicotine like 3 or 6mg max otherwise it will kill your throat.
to use higher nicotine like i gave up on overnight i used a mouth to lung nautilus tank with 18mg nicotine and not had a cig in 2.5 years. after a month i did buy shed loads of subohm tanks and have been on 3mg since.
hope that helps a bit and others will be along to offer their advice soon.