I got questions for you :
Are these 2 your products?
Or are you going to be promoting them as an affiliate?
If as an affiliate no problem, you can promote millions of products if you want.
But if you own both products, that's ok too but not good for you.
When selling your own products it's always best to have one clickbank account for each product. Because when affiliates sen you visitors they will end up on the same landing page. Not good for convertions and may confuse affiliates alot.
But that's ok by clickbank too, you can sell up to 50 products from a single clickbank account, but you can only have 1 affiliate program on 1 website for the products.