It's well publicised that Seahawks GM Tim Ruskell values character. He's not likely to draft prospects with red flags in that department, especially when picking so high in each round this year. The Seahawks today signed Colin Cole - a 330 lbs defensive tackle from Green Bay - which would seem to make drafting Raji less likely on it's own merits. But both he and Rutgers wide out Britt have other issues which make them unlikely Seahawks-to-be.
Raji, as I wrote a few weeks ago, was held back before his senior year and red shirted by Boston College for academic issues. He was also suspended after punching an opponent. These are the kind of highlighted problems that Seattle will look to avoid when investing big money and a high pick.
Britt is in a similar position. He was suspended for a game against Morgan State due to an 'undisclosed violation of team policy'. To quote ESPN, "Scouts have serious concerns regarding his maturity, work ethic and practice habits. Scouts who have interviewed him have described him to us as 'arrogant' and having 'an inflated opinion of his skills".
I'm going to predict that the Seahawks won't be drafting Raji and Britt with their first two picks.