Not really something we can help with, as it really comes down to what you want to build, and what which version/type/theatre/era etc etc.
If you mean the Tamiya Lancaster, in 1/48th scale, then it's a pretty average kit, and in fact, below today's standards, even though up-dated. It was first released in 1976, and was over-priced then, for what it is, and is even more over-priced today.
Some of the kits you are looking at really need the benefit of experience before tackling them, to get the best results, and value for the money spent, so it might be worthwhile considering building a few of those you already have, in order to gain some basic experience, and build on skills.