Hello and welcome to the forum
Im new here aswell, but after the past few days ive learnt loads from the people on here! they are very very helpful and will answer any questions, how crazy or daft they might seem to you :L
From what you've asked, and what people on here have told me, the best thing to do is to save the penny's, and get talking to local pilots that fly these, buy plenty of books and DVD'S and study hard! Regarding meeting local people, why don't you take a look at the area sections on the main forum? try and find the nearest group near you? If not, im sure if you start a new thread in General Discussion, with a title stating " Anyone near Portsmouth" and you'll get someone Pm you or reply fairly fast.
The flight zones, im not so sure about this, you could always do half and half, fly once over Portsmouth staying within the guidelines, then travelling outside Portsmouth when you want to get a little more adventurous? thats certainly what i plan to do
The clouds and passing through them is also something i wondered about, but what i was told ( others please correct me if i am wrong) was that your best bet, is to either wait until there is an opening and going through the hole, or if there are'nt any, then then proceed with caution. A few suggestions would to before hand check the weather report, to see the thickness and heights of the clouds, then if possible contact your local atc tower. Mine would be Fenland airfield, so i would contact them and simply see what aircraft, and what levels they are at within the nearest 10 miles for instance. Other things you could do is to make your self visible, wear bright clothing, and/or place strobes onto your frame and wing tips, if you plan to do this often. But im sure other guys on this forum will help you more with this.
Hope this helped, and im sure other people will change bits of what ive said, as im still learning aswell. And remember you can ask as many questions, when you ask you learn i always find
Cheers
Mike