Hiya Hayleyberry
I've got to be honest..... its totally possible. We're talking about 4.5 stone in about 6 months. That's about 26 weeks at a 2.5lb a week loss. Well why not..... theres a lady at my group who has lost a jaw dropping totally staggering 7.5 stone!
Since last October!!!
Its not always slow and steady its what you make it. If you remain focused and on plan you'll do it. In all honesty its your best option, like you said other plans leave you feeling hungry ie WW and fad diets are short term and not really practical and you end up putting the weight on as soon as you start eating normally again.
So my suggestion is just go for it.... you have nothing to lose but weight!
Remember to drink plenty of water and ONLY EAT WHEN YOUR HUNGRY not just because its free food and because you can. You will lower your weekly weight lose or even gain if you eat food just because it's free food and your not hungry. And if your peckish have a drink of water before you eat in case your not actually hungry. Also maybe consider limiting your syns to 5 a day. Pretend you don't have them and use them carefully, but definitely have your HEX A and B's.
Comparing isn't always a good idea, remember every one's body is different. Just because one person lost 0.5lb or 8lb doesn't mean you will or wont. Red green or EE they all work. If someone lost 6lb on green doest mean you will or wont. The plans all work, they are just different because we are all different, with different lives and tastes. Pick the combination that suits you so that you enjoy doing the SW plan. That way you'll be more likely to stick to it.
I really hope you don't think I'm nagging but you sound like you really want to do it but are worried it wont work. It will! Believe in yourself and the plan. You can do it...... and you've got Minimins too!!
Good luck in you journey xx