It really depends on a lot of things -- including how bad the condition is, and your priorities.

   Our boat is 3 years older than yours.  When we bought it 10 years ago, the survey recommended a complete bottom stripping.  However, while there were some spots that had flaked, it was not extensive; I sanded them down, faired them out, and repainted.  10 years later, we still haven't stripped it, and the occasional flaking has not gotten any worse.   We're not racers, and we've found that we can stretch our paint job through 3 seasons here (we sail in NY and New England) before the underside gets sufficiently ugly to call for hauling out for the winter to redo it; yes, by the third season I do need to occasionally free dive to do a little cleaning, but again, acceptable conditions for our sailing needs.

   While its not easy to find yards around our area that will let you do your own work below the waterline,  we have found them.  I use an orbital  disk-sander with a vacuum attachment and take off the most recent paint layer and the two layers below it (hint: if you make sure to always use a different color paint for each painting job, you get an easy visual clue as to how far to sand), the job takes no more than the better part of a day.  At this rate in maybe another 30 years we'll get down to the barrier coat!   We then apply 2 coats of ablative paint, plus a 3d coat just below the waterline and on the leading edges of the keel and rudder. Takes less than 2 gallons.  We've had good results with West PCA Gold, which is a rebranded Petit paint, FWIW, but obviously different paints work better in other waters, climates, and conditions (Practical Sailor does good surveys on this, frequently updated).

  Again, it all really depends on your priorities.   Since you are a new owner, let me try to break it to you gently (if you haven't realized this already!):  Our older (and not so old) boats will inevitably consume LOTS of time and money for all kinds of maintenance and repairs, as well as upgrades, improvements, and other tweaks (neccesary or not).  Unless you have unlimited amounts of both, its all a question of where on your "to do" list a total bottom strip and barrier coat ultimately reside.   Obviously, for us, while it IS on the list, it hasn't been very high up there -- which is not to say we haven't invested quite a lot over the decade in our boat to maintain and improve it.  As they say, your boat, your choice.

    If you do decide that the condition is such that a bottom strip is warranted at this point, as Bill warns make sure anyone who is doing work on the hull knows what they are doing.  An improper blasting job can do a great deal of damage to a hull -- we're talking about fiberglass here, not steel -- and compromise its impermeability.   Indeed, Don Casey, in his wonderful treatise "This Old Boat," not only urges not stripping unless the paint layers are truly failing, but has this to say: "Never, ever let a boatyard staff convince you to sandblast, sodablast, or shotblast with any medium to remove paint from your hull -- unless the hull is steel."    And even a couple of moments of inattention to a power sander can dig into the hull (don't ask me how I know).  Casey recommends chemical stripping, but again cautions "there is simply no nastier boat job than stipping the bottom, so avoid it if you can."   Since he is reputedly far more knowledgeable than I am regarding old boats, I've deferred to his advice!   Also, make sure you wear good personal protection gear (something we do a lot these days anyway!); I wear a full Tyvek suit, with a hood, a good respirator with NIOSH filters, goggles, and ear covers; bottom paint dust is nasty for you and the environment (which is why it is so effective).