Derick000
As Blacksheep said the best way to find out if you are entitled is to apply. If you are turned down you will be given a full explanation as to why you are being refused.
In relation to resuming work p/t in the future, AFAIK, there is an earnings limit on what you can earn and still retain payment. You can check with the Dept if this (hopefully) becomes an issue in the future.
In realtion to tax, if you are presently on DA, which is a means tested payment, in all probability this is not likely to be much of a problem. If your spouse was working then the issue would arise, but as you are already on a means tested payment, and getting Living Alone Allowance, this probably isn't an issue.
Go ahead and apply anyway.
Murt