From reading your posts and taking into account what you said I’d say you would be best off going with a single cell squonker and a single coil rda, its much easier to build on a single coil rda, ideal for starting out, something like the topside 90watt with a molicel p42a cell would give you good battery life, if you don’t like the look of the topside, look at the hotcig rsq, it’s only 18650 but 2 batteries should last all day with a 0.6 build, and for an rda something like the d-pro mini, the drop solo is good but if you wanna run at 0.6 resistance you may find you have to close the airflow down a fair bit, to much airflow will kill the flavour, the d-pro mini is 22mm with a small top cap and I find works well with a 0.5 - 0.6 coil, very good flavour from it, for wire would be worth trying some flatwire uk flatsixty, 24 gauge, 7 wraps with 3mm id would give you about 0.6 build on a single coil, super clean wire with absolutely no metallic taste to it....