Been using multibit, but saw how you can keep track of a single address on blockchain so I made the switch for that. However, I can't find a place to import nor can I find how to keep the same address. It seems to create a new address for receiving every time and when I sent 2 payments, it was sent from 2 different addresses.
Does multibit have a feature where you can see your total sent/received?
I'm not a multibit user myself, but i did try it out in the past... Personally, i'd suggest you to move to electrum if you want more coin controll options (like importing private keys from other wallets, re-using your addresses, picking your inputs, chosing your fees).
I say this because, after testing multibit HD, i did not find a way to do the things you ask (importing private keys, coin controll or address selection).
In my personal opinion, after a really quick testrun, i found multibit to be a great wallet, but it shields its users agains some of the technical aspects... I did hear on this forum that electrum passwords are a bit easyer to brute-force IF somebody has physical access to your PC AND you have a weak password.
