You could find yourself in the unfortunate position of being home with no work or being away building up hours. Contract work is unlikely at this time of the summer apart from your low hours, it's possible someone may be stuck for numbers but they won't normally have availability of training personnel given they're so busy right now. If something does come up, 90% it will finish in 2-3 months max and you will be left high and dry for the winter as many experienced pilots will be let go over the winter and work in Europe will dry up. As pointed out, having 500 hours on type will get you forward for most positions, 150 hours is too close to the bone.
And, please don't take this the wrong way, but is this the job for you if you need close proximity to home, either because you need to be or because your family need you to be there? It's simply not that type of job for the vast majority of pilots, and you need to be realistic and have very strong family support because as a career it is a known relationship-breaker. Just think of the hundreds of experienced US pilots looking at contracts in Europe, the Middle and Far East at the minute because they are being furloughed by their airlines at home.