Im currently 4-2 and in 1st in my league. Is this a solid team to make it to the playoffs?

That is a championship level team unless one or two of your marquee players drops off the face of the planet. Brady is easily the top QB. Ronnie Brown is tied for top RB (depending on scoring). Housh and Steve Smith are both top-5 WRs. Gates is the best TE in the business. Jags are a solid D and will get you steady point production. Kickers hardly matter, but for a position that doesn't matter, Akers is above average. Nice job putting that team together.