A lot of the kits I use to do looked about like that. They made decent beer. But if your recipe is based on a high efficiency, then it might not be enough to give you the OG you need depending on how you go about mashing and how good you are at it.
If you know what the pre boil SG is, you can just estimate how much more time you need to boil to evaporate more water to get to the desired OG. If your hop additions are timed from the end of boil as most are, then no issue for hops. But if you have one of the recipes that counts 0 as the start of boil, then you will need to adjust them.