Using 1/2" Brait (8 plait) you should be able to get at least 400, and maybe 500 feet, along with 30 feet of 1/4" HT chain. (which will work with the Lewmar 700 windlass). The issue with a windlass is the amount of distance of "fall" so the windlass will self tail. To max out the amount of line, you may have to spread it around in the anchor locker as the line comes in.
There are two other options: One is to use 3/8" Brait. That way you can get over 500" in the locker. New England Ropes gives the "strength" at 4000 lbs. Should be enough for 99% of anchoring conditions--the other 1% you probably should not be out there. I have used 3/8" double braid rode on a 45 foot racing sailboat, with displace end of about 27,000#. I also used that same rode as an stern anchor and kedge for a 62 foot/65,000 lb motorsailer.
The other option, is to bore a good size hole between one of the side lockers, and take several hundred feet of the primary rode to that locker by hand. It will be rare than you are anchoring in over 100 feet. Also consider anchors which do well with very short rides--such as the Boss or Ronca.