You can if he will tree coons
Unless there are a ton of coons there is no REAL benefit to hunting 2. Sure one may help keep the track if the other loses it, but one good dog is WAY better than 4 mediocre ones, believe me, been there, done that, got the t'shirt to prove it
Seriously though, one good dog is all you need. Besides, it is really more enjoyable to me to just go out by myself or even better with my son and our good old Walker male, "Cinch". Just something personal about it, you can really develop a relationship with one good dog that isnt there with a pack.
FYI Packs of hounds are used more to force an animal that would rather run or fight to take to the trees such as a mt. lion or bear. Coons for the most part would rather tree pretty quick that go long distances or fight. Of course there are exceptions. Here in WV they breed in Feb. and our season is in then. Hides are prime, but the old male coons will be on the hunt of a girlfriend and be out of his home territory and pumped up with hormones. They will run for miles some nights and fight the devil himself. Makes for a long night. Now in that situation 3 or more dogs will help. One dog and two is pretty much the same unless you have lots or coon trails then maybe t hey will "split tree" or each get their own coon.
There is lots too this, and a good dog is worth more than they fetch in just saving you lots of frustration.
My advice, get one that will tree, stay treed till you get there. Won't run trash and won't stay at a hole if mr ringtail goes underground. Hunt with the dog a night or 2 before you lay down the cash and by all means if you don't have a buddy with a good pup trainer hound that you have unlimited access to...DON'T EVEN THINK ABOUT BUYING A PUP TO SAVE MONEY. You will wear out 3 pairs of $100 boots, have thousands in gas money, not to mention feeding, housing and vet bills for a pup that in the end may never make a coon dog.
Hope this all helps in some way. If you have specific ???'s you can email me or PM me.
Good Luck,
Dave