Well, then you might want to avoid Parkman and stick with Anderson.
I started my FIW collection as a skirmish period. And now, 1800 or so figures later, it is a battle collection - but then again, not. I have 42 figure units that count as companies only but, because of numbers, are based 3 to a base. So, I have formed units in company strength having what appear to be linear battles but are really just grand skirmishes.
It is a fascinating and colorful period. Do lots of native Americans. You will need them.
And might I recommend, if you have yet to commit, that you check out Old Glory 25s Blue Moon 18mm range. You can get everything you need figure and building wise from one source - and the buildings are designed for skirmish level gaming. The figures are large enough to paint well (bigger than traditional 15 mm) but still leave a much 'larger' table to game on than the larger scale figures.
Now expect lots of counter arguments in favor of the larger scale.