According to this image, the keel extends quite far aft..
The forward strap looks like it needs to go just ahead of the mast - but watch for where your knotmeter impeller is located.. ideally pull it and insert the plug, but otherwise try not to crush it.
As for the aft strap now you need to know the prop shaft arrangement, which the above drawing unfortunately doesn't show.. you don't want to be anywhere on the shaft or prop. By the look of it you may want to actually pick up by the back of the keel to be sure. It doesn't look like much space between the keel and rudder, much of which will likely be prop and shaft. BUT... you want to be sure you're securely on the bottom of the keel not half on/off the trailing edge.
Hopefully you can discern from inside just where the shaft exits the hull.. and that there's room between the back of the keel and that point. Picking up by the hull would definitely be preferred.
EDIT... found this but not sure it's a lot of help.. looks pretty tight.
Edit too... good idea to print that drawing out and blow it up for the travelift operator in case he's not familiar.