so mtself being in a 1.2x1.2x2m would preferably go for the ts 600 as a secondary light as it has a larger coverage !?
With your tent size, you'll need either two of the SP250's, or a single TS3000.
TS3000 is going to be cheaper than 2 of the 250's.
Use the one you have with just the bloom switch in flower as a spectrum supplement, and also keep it in case you have a light emergency. Always good to have some type of backup to get you through a couple days (even if not optimal) when a main light goes out or something.
How many plants have you fully flowered with that light you have? I looked it up and it seems pretty fishy to me. I wouldn't try to flower with it, I think it would be a waste of electricity.
That TS600 is only going to cover 1/4 of your tent. The light you have now is maybe good for about the same. That still leaves you needing to cover half your tent.
Be smart with your money, just sayin. Buy what you really need once, and not end up in an endless loop wasting your coin on stuff that really doesn't do the job.