Don't suggest a 3pt backhoe. For starters, putting one on will void your warranty. You get what you pay for so get the backhoe made for the tractor as it includes a proper subframe and isn't as likely to damage your tractor.
I see a lot of talk about aftermarket or third party products voiding warranties but that isn't 100% true in the US. In order for your warranty to be voided the product you used would have to be the cause of the damage. If you add a 3pt backhoe and there is an unrelated problem then you have warranty coverage. That being said, don't use a 3pt backhoe. It will break your tractor and the damage will probably not be covered by warranty. If the manufacturer requires the use of a certain branded product to maintain your warranty then they must provide it to you for free.
15 USC 2302(c)
(c) Prohibition on conditions for written or implied warranty; waiver by Commission No warrantor of a consumer product may condition his written or implied warranty of such product on the consumer痴 using, in connection with such product, any article or service (other than article or service provided without charge under the terms of the warranty) which is identified by brand, trade, or corporate name; except that the prohibition of this subsection may be waived by the Commission if
(1) the warrantor satisfies the Commission that the warranted product will function properly only if the article or service so identified is used in connection with the warranted product, and
(2) the Commission finds that such a waiver is in the public interest.
The Commission shall identify in the Federal Register, and permit public comment on, all applications for waiver of the prohibition of this subsection, and shall publish in the Federal Register its disposition of any such application, including the reasons therefor.