Cool vid. Won't be hard for you to get back what you had I bet. I think once you've done it, you know you can do it.
Realistic expectations are tricky cause it's hard to say how your body will respond. Not everyone responds the same way to the same exercises. If you really have never lifted before, you can expect pretty big strength gains early because your body will want to get to a certain level (where that is can be hard to determine beforehand). So, just becoming comfortable with the movements and putting that additional stress will have you adding weight easy for a while. I would say try and increase weight every workout (not week) until you can't anymore. Just from judging my previous record, I lost about 18 lbs, and got my max 1/2 squat (to parallel) to 325 lbs currently and that added about 4 inches to my RVJ in about 3 months with hardly any plyos. I'm trying to transition now into more of a plyo focused program to add some spring. But I had lifted a lot in the past, and was coming off knee surgery, so there's no reason you couldn't do better. I'm happy with 1 in or so a month personally.
As far as food goes, I can definitely relate to job getting in the way. I travel a lot for work and it is damn near impossible to find vegetables on the road! Even at most restaraunts, it's like fries, baked potato, potato salad, cole slaw (swimming in mayo), etc. Anyhow, when you eat is not as crucial as people like to believe. The main reason you always hear "don't eat late at night" is because people tend to over eat or eat junk late at night. Rarely do you hear about people getting up for a midnight salad and some baked chicken! So, as long as you are eating good food, it shouldn't matter that you have to eat at 11 pm. There's also been a lot of interesting studies done on intermittent fasting and how it can be effective during training. Might want to look into it. I've fooled around with it, and I definitely lost weight and maintained my strength and activity level.
Good luck bro.
