Eviction????

[Lisa Malservisi Cornillot]

Hello Landlords,  just wanted some advice on my situation, which I am sure has happend to some of you in the past.  I bought a 4 plex here in Florida, 1 year 5 months ago, it came with 3 tenants already, one good and two not.  One of which I ended up evicting 1 year ago, which ended up in a nightmare.  He put liquid cement down the pipes, broke windows, stuffed raw chicken under the carpets and ran me up over 3k in water bills by leaving the water on for the whole time the eviction was going on. Anyway, that's over, but here is my dilemma.
One of the other tenants has been late since the second month of ownership.  He pays me every two weeks but little bits and is now $1375 behind.  I have served him 3 day notices 4 times now, then he promises to pay x amount every two weeks to catch up, but then there is always an excuse why the amount is much less.  We have no lease in place as I have been wanting him out since the begining, so we are on a verbal lease.  I also sent him a certified letter that I needed my place back by x date and he never picked up the letter either.
Last Monday I gave him another 3 day notice and he did not pay or move out by the due date, but now he is sending me text that he is going to pay me 800 by next week and then 1000 and doesn't stop calling me.  I have not answered.  I think the Eviction Company might have served him the 5 day on Friday.  So my question is, should I talk with him to try to resolve this or go ahead with the eviction, but what if he turns nasty like the other tenant?  He actually told me that he would do worse things than my previous tenant did. Please advice, thank you.