2 Suggestions from the MA Newbie (who is going to try 3,000 sft after Irene comes through):

1) Organic compost as a topdress/rake in for seed. I'm going with bags of Moo doo.
http://www.moodoo.com/

2) Tenacity. Order it Asap.

Cheap guns, booze,fireworks, no taxes. My goodness having New Hampshire next door is the ONLY reason I don't mind living just over the border in Mass.

Welp. Start perusing the organic section of the board. Although I'm in Mass I'm far from a hippie, but lawns need that organic stuff. Not milorganite but SBM, but check out this thread: http://aroundtheyard.com/organic/does-organic-really-work-t4659.html My plan is professional slow release syntheti...

I'm a newBie but everything I have researched and read over the past month indicates Tenacity is the one to use to beat down the weeds while seeding. I'm using the same strategy as above more or less, Grass safe WBG for the kill, then while I'm seeding I'm going to open up the bottle of Tenacity.

Newb with an 8oz Bottle here. I'm going to do a lot more reading and study on application rates before I apply, besides its been raining for 24 hrs here in Massachusetts. I'm looking an application rate based on my 2 gallon pump sprayer. This would be for a spot to partial blanket application as 1/2...

Check out the BASF site, Drive 75 is old school. Drive XLR8 is the new stuff.
http://63.76.74.75/BASF_Turf_&_Ornament ... 3/3462.htm

(total newB here) Dimension is a pre-emergent isn't it? will it do anything against existing crabgrass?

I did dimension in the spring, had sporadic crabgrass by summer. I think I may double up and do a spring + late spring dimension application.