It's healthy if you don't start with chemicals that are gonna stick in your soil for a while like glyposphate. We like the vinegar, citrus and clove oil herbicides MUCH better. Organic fertilizers are another way to keep it healthy (compost, manures, seaweed and fish emulsions etc.)...
SO to start, a quick hit with organic herbicide (rolloer application reduces drift and collateral damage (suspect I don't need to explain that
phrase to you
). THEN pull the black plastic over that and let it cook in the sun for two weeks. Remove, spade, and till (ONCE! Do not buy a tiller; this is why God invented rental stores). Remove foliage clumps as you go. Add in compost and manures with that first tilling. After that buy a box of red wrigglers at the bait store and make sure they have plenty of fresh humus to eat and they will do ALL the tilling your garden needs AND add organic fertilizers as they do it. You are a busy guy so make your garden work for you. Hit it with the cultivator once and a while to knock down the weeds and add more compost as a mulch when you do; you will get a great crop this year and the neighbors will be begging for your secrets in a year or two (DON'T GET TRANSFERRED! You will want to move this with you!)