At least you are going about this the right way. Having decided that you want to become a rebreather diver, you have examined your diving needs, and identified the type of diving you want to do. This helps to identify which rebreather will best fit your needs. On the other hand, you may not always be limited to the depth specified in your post. You may find, after a while, that you want to go on some wreck diving trips to other areas, where the depths are greater.
Most people find, as they go through their diving career, that they buy equipment that is perfectly adequate for what they want to do, until their skill level and desire to do more exceeds the capability of the original equipment. Then, they buy more stuff!
With OC stuff, that is usually not a life-threatening crisis, since it is far less expensive. (Unless, of course, your significant other threatens you with a fate worse than death if you buy more of that "junk"!)
In the case of CCR stuff it can be much more critical since our stuff, while much better, is still
more expensive. This will seal your fate if SWMBO finds out what it actually costs!
Now, imagine what would happen to you if you have to buy not one, but
two units. I shudder to think....
In the end, it is probably better to stretch your budget once, and have a dive tool that is capable of doing what you want to do now, and well on into the future. Ah, the bliss....the domestic tranquility...the lack of creditors pestering you at all hours! Nirvana!!
