I started to write a big long response/analysis and then said "screw it, it is just too complicated an issue, with too many variables for anyone "reading this on the fly" to get any valuable info". A Lawyer is not an Accountant; an Accountant is not a Lawyer; A Real Estate Salesperson is not either of those. The Real Estate Co/Notario relationship here is intentionally vague & mysterious (why do agencies recommend one over the other in sales vs buys).
If the $$ involved in a sale warrants it, I would hire both an accountant & lawyer to be part of the sales process & closing. It will cost you but, ..... having an agent/acct/lawyer/notary all doing their macho-thing might save you a couple of bucks (after they figure out how much each of them will take from the pie) Just a takeaway ...... sales over 500K be prepared to pay 13 to 16% out of your sales price to get the deal done. Or do like I have done and just bend over.