Here's what I did... as a partial mash (
https://www.homebrewtalk.com/f39/easy-partial-mash-brewing-pics-75231/). It was really easy and didn't require any more equipment.
1 lbs Pale Malt (2 Row) US
3.6 lbs Light DME (3 lbs of it was late addition)
1 lbs Roasted Barley
12.0 oz Caramel/Crystal Malt - 60L
12.0 oz Chocolate Malt
12.0 oz Munich Malt
10.0 oz Barley, Flaked
8.0 oz Oats, Flaked
0.30 oz Magnum [14.10 %] (60 min) Hops
0.80 oz Goldings, East Kent [6.10 %] (10 min) Hops
1 lbs Milk Sugar (Lactose)
1 Pkgs SafAle S-04
I partial mashed the pale malt and all the other grains in ~2 gals of water (1.5 qt/lb of grain) at 152-154 degrees (used my oven at 175 with mash in the pot to keep the mash at that temp), "Teabag" sparged into another pot with ~1 gal of water. Added everything together in the brew kettle, boiled as above with the lactose at 10 mins. Ice bath cooled, topped off to 5 gals with an OG of 1.064 and its actively fermenting at 64 degrees. BrewR estimated my OG at 1.065, IBU 25 and 42 SRM. So I don't think I'm too far off from the original recipe.
Just follow the directions in the partial mash tutorial above. Not too much more difficult than just extract with steeping grains (this is only my 6th or 7th brew BTW).