As you are trying to stay in this budget I see the only safe option as a CLX 27 from Gardiner and the backpack from Gardiner , it will still put you over budget but it will work and you will reach , certain townhouses need a 27 footer due to dormer windows , an extension hose of maybe 10 metre would be good to couple the 2 items .
Of course an SLX 27 would be far better in the long run as it would save you an upgrade in the future if it all takes off ,
I myself use an SLX 18 for 90% of my work and add on the bottom 2 sections of a CLX 27 as and when needed.