Sorry brother I thought I replied! You plant is big bro and beautiful
u still shouldn't worry about lower leaves they look natural. I'd pull them off if it was me
you plant is concentrating on more important things so that low down stuff will get less and less love as the plant gets bigger. Ull see it everywhere you go look at every large plant or tree you pass it's nature's way! Soon she'll be perfect for a rope swing
sorry can't be too serious. And for the feed I'd always wait untill late stretch but some brands of feed do recommend starting earlier so can't help too much.. I have even used half grow and half bloom before