>>2709954Top insulation:
Quilt or a sleeping bag. If you go with a sleeping bag, it's better to have it unzipped and just tuck the edges between yourself and the hammock. Disclaimer - I only tested this with an underquilt, I don't know how well it works with a sleeping pad. In case you need to zip up your sleeping pad - have a piece of ground sheet or your sitting pad next to the hammock. Step into your sleeping bag while standing on it, zip up, sit in the hammock and then lie down. Beats doing the caterpillar inside the hammock.
Bug protection:
I think the only viable (comfort wise) options are an integrated bug net (lighter), or an external one (heavier but more versatile and comfortable). With an integrated bugnet, you still need protection from the bottom or you will get bitten through the hammock. Usually that's the underquilt but if it's really hot then it doesn't feel all that good. I pay the weight penalty for a full-sized external net that reaches all the way to the ground for a variety of reasons - I can stick my feet or hands out of the hammock, I can use it as a chair, my underside is protected even without the underquilt and finally I can roll up the hammock and sit on the ground under the net to prepare food. I camped in places where mosquitoes were absolutely deadly and I had no option to go somewhere else.