Hello and 600/750?

Hi all not ridden in 12 years but at 40 I'm thinking of getting back in the saddle! I've looked at the usual jap 600 suspects but realised I could get a Ducati for similar dosh! At 5ft 5 I like the low height and love the monster style. My wife isn't keen on me taking up biking again but I think if it's an older model that I can tinker with as well as ride shell give in rather than me ordering a new R6 and race leathers!
All this has got me looking at monsters... I'm told that I will soon be fed up with a 600s power and I should look for a 750 minimum but they are like hens teeth! I missed one on eBay at the weekend it was gone in a day!
There's a 600 not to far from me 17 years young in good condition and fair money I'm tempted to have a look at that?
What's the experts opinion? I will only be dry local plodding/cleaning/tinkering with the bike as I say not ridden for a good while...
Cheers