For those that try this challenge, you quickly find out that it is nowhere near as easy as you first expect it to be.
Villa though, providing you have the right tactics, are one of the easier teams to start this with. Delph will turn into a world beater and providing you can find a tactic to take advantage of two really fast strikers (whoever between Agbonlahor, Bent and Delfouneso) then the goals will come in no problem.
Too bad for the rubbish assistant manager, already heard that a few times on this. If you can never sell the foreigners then at least try to get them out on loan to get them off the wage bill.
I'd recommend promoting Gary Gardner + Baker (heavy training on marking needed) and try to give them as many run outs as possible for the last 20 minutes of games you aren't going to lose + starting places in any cup games.
Suggestions for defence: take a look at Craig Dawson, Richard Stearman, Zat Knight, Kyle Bartley - all of which could do a job immediately and with the exception of Zat Knight, are all very young and will only get better
edit: Ryan Bennet from Peterborough also worth a look. You'll find lots of rough diamonds in the lower leagues similar to him where you take a look and think wow, he'd be great if it wasn't for his bad marking or jumping (Steven Caulker). Luckily if you have some good training regimes these players can become really good after just a season.