Preparing for my first Partial Mash Brew - Advice/Review?

Hi All

I have been lurking here for a bit but never got around to posting. So far I have brewed an extract brew from Palmer's How To Brew and I would like to graduate to Partial Mash (eventually AG, when I get a bigger living space). Later this week I plan to grab a 5 gal cooler and make a mash rig similar to the one here. I also understand that I will need an additional pot to boil all my water, which I'll try and grab somewhere cheap.

I have formulated a recipe (mostly BierMuncher's Black Pearl Porter w/ some light DME instead of Pale Malt) and procedure which looks good on paper, but I am a newbie and I would like some veterans to give me the OK (please!). Anyway, here it is:

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Brew Type: Partial Mash Date: 1/6/2011
Batch Size: 5.00 gal
Boil Volume: 3.25 gal
Boil Time: 60 min

Ingredients Amount Item Type % or IBU
3.50 lb Light Dry Extract (8.0 SRM) (15 min) Dry Extract 32.7 %
2.00 lb Munich Malt - 10L (10.0 SRM) Grain 18.7 %
2.00 lb Pale Malt (2 Row) US (2.0 SRM) Grain 18.7 %
1.00 lb Chocolate Malt (350.0 SRM) Grain 9.4 %
1.00 lb Caramel/Crystal Malt - 30L (30.0 SRM) Grain 9.2 %
1.00 lb Oats, Flaked (1.0 SRM) Grain 9.2 %
0.50 oz Fuggles [4.50%] (60 min) Hops 3.0 IBU
0.50 oz Fuggles [4.50%] (2 min) Hops 0.3 IBU
0.25 tsp Irish Moss (Boil 10.0 min) Misc
1.00 cup Malto-Dextrine (Boil 20.0 min) Misc
0.25 lb Milk Sugar (Lactose) (0.0 SRM) Sugar 2.3 %
1 Pkgs London Ale (Wyeast Labs #1028) Yeast-Ale

Beer Profile Estimated Original Gravity: 1.068 SG (1.050-1.065 SG) Measured Original Gravity: 1.010 SG
Estimated Final Gravity: 1.016 SG (1.012-1.016 SG) Measured Final Gravity: 1.005 SG

Mash Profile Name: Single Infusion, Full Body Mash Tun Weight: 4.00 lb
Mash Grain Weight: 6.97 lb
Grain Temperature: 72.0 F Sparge Temperature: 168.0 F
Sparge Water: 1.29 gal

Name Description Step Temp Step Time
Mash In Add 8.71 qt of water at 172.5 F 158.0 F 45 min
Mash Out Add 3.48 qt of water at 197.3 F 168.0 F 15 min
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Any comments/suggestions would be appreciated. I'll keep this post updated with progress. Cheers, and wish me luck!

Doesn't look bad at all to me. I often mash around 6 or 7 lbs of grain and then add about 3lbs+ DME. Works great. You can mash that much grain on your stove without a mash tun, too. I personally would not bother with making a small masher when you can do it easily (and cheaper) without it. Wouldn't hurt, but I would just do the paint bag technique and build a real one when the time comes.