Yep, you're on the right track. IMHO, the spoa is the way to go. When you do the soa, you may want to go with rear springs up front, which will also move your axle foreward about an inch - you will need the extra room. Also you may want to pound back the lip inside the rear of the front fenderwell to keep it from chewing into your tires.
Once you do the spoa, you may also need driveline spacers or extended shafts, depending on what you're comfortable with.
I have a 5.5 soa, with 2" longer shackles (1" lift), stock springs, but front is moved foreward 1", I cut as much fenderwell as I could and installed TJ flares on the rear. I'm running 33 Baja Claws (which are actually a strong 32"), and I still rub just a little at full flex, but not enough to tear anything up. If you're looking into getting swampers, you're gonna need more lift than that.
Oh, and I have a 3" drop pitman arm which still doesn't quite do the trick, so I'm getting a Z-link to help. Extended brake lines are a must for the front. On the rear, you can relocate the mounting tabs for the brake line or get the extended hose.
Scott Trester - '88.5 Suzuki Samurai