I did the same thing for mine, and it was not easy. One of the main realizations I came to was the need for great tools to succeed. If you are doing work that requires tools alone, then one of the most basic to consider is an impact driver. As much as I love Makita as a brand, they tend to have overpriced models that are not particularly useful all the time for my needs. As a good suggestion, I think it's useful to use some review sides before choosing a drill. I have found
powerdrillguru.com extremely useful for that matter and got a great discount on Amazon on the model I liked, and they were quoting it as the third-best in the market right now.