Wow, these forums seems to be fairly inactive. I must say that I just stumbled upon them today! I'm guessing that you've already found the answer to your question by now, but since nobody else replied, I might as well take a stab at it! LOL.
If you're wanting to get 4.1, that antenna isn't gonna do it. There is a small chance you could luck up and pull it in, but my money is riding on "no". My recommendation, if you really want that channel as well as others, would be to get a combo antenna (UHF/VHF). Try to find one that's not highly directional, but you may still have trouble pulling in all the channels with a single fixed direction. My personal preference would be to get the biggest, most highly directional antenna I could afford, but that'd probably be overkill for your situation!
If you can't get all your favorite channels without turning the antenna, a rotator will fix you up, but that's more aggravation. An antenna like the Winegard 7210 should do fine for you, since you're not too horribly distant from the towers. I'd go with something a little larger depending on mounting location and terrain, but definitely no smaller.
As for the distribution box and preamp, I'd say definitely grab a distribution box if you have several sets and long runs in the house (channel master 7777 is a great box... I love mine), but I don't think the preamp would be quite necessary.
*EDIT: I meant channel master 3044, not 7777. The 7777 is a preamp, the 3044 is the distribution box.
too many numbers!!! AAHH!
Hope this helps.