think it really depends on what condition the houses you are looking at are in. If they're in good condition, just not your style preference, then the answer could definitely be yes.
Redecorating/remodeling may not cost as much as you are expecting. There are so many discount stores now, you can often find the style you're going for, for a fraction of the price.
If you choose to do this, my suggestion would be to redo the lights first. Get some lighting fixtures that you like in each room, that way it will at least feel like each area of the house has a little bit of your personal style reflected. Check sites like http://www.interior-deluxe.com and you'll often be able to find what you're looking for and stay within your budget..it just takes a little bit of looking!
Either way, it's a huge decision. I wish you the best of luck!