There are two brands of furlers that are very managable projectss for the competent do-it-yourselfer, so you can save money on installation if you're handy.
At the low end of the price range are the inexpensive but reliable CDI furlers. The CDI FF7 would fit an OEM Oday 30. You can install it yourself over your existing forestay that has an open body turnbuckle. Street price is around $1100 + $130 for ground shipping in the USA or Canada. Add another $150 for stanchion blocks (street price on Selden 1" diameter stanchion blocks is 3 for $75, and furling line (low cost).
Or take a look maybe at the Furlex 204S #03502562 kit, which comes in a DIY kit included an new 1/4" forestay for about $2400 street price plus $150 shipping in USA. The kit includes a 1x19 stainless steel headstay, (4) stanchion blocks, low stretch furling line, removable split drum for conversion to racing, twin groove aerodynamic extrusion, toggle for stem head, (2) halyard fairleads and top guard.
As Jeff mentioned before, the Harkens furlers are are first class and I'm sure you'd love it, but they are a pricier than the Furlex, and require more expertise to specify and install.
Both of these are very friendly to the average Do-it-yourselfer. I have worked on boats with CDI's and Furlex's many times, and they are quite reliable and easy for the DIY person.
The Aldos and a few others might be worth a look, but I'm not particularly keen on them.
In my experience, it's not cost effective to convert a hank on sail to a roller furler sail. You need to add a UV cover, covert the luff from hanks to a luff tape, and add a luff pad so it furls well. You should also add extra large reefing reinforcment patches at the head and tack. That's going to cost you at least $400 at a loft. and when you're all done, it still won't work as well as purpose-designed furling sail because the draft won't be optimized for furling. It's usually more cost effective to buy a new RF genoa that's made for furling and sell the hank on one on eBay.
Hope this helps you figure out your options.