Jersey Marginal Relief

[Digger65]

Hi have an interview for a job in Jersey next week and wanted to check a few facts
Salary will be around 23K with my partners PT income adding another 7K (she works online and can work from anywhere)
we have one child aged 10
I have been informed we may qualify for "Marginal Relief"
my rudimentary calculations come up with the following:
married person relief £22800
lower child allowance £3000
Wife's earned income allowance £4500
however we are not actually married (but will be tying the knot v shortly) does this make a difference if we are common law and not legally partnered?
am i right in thinking that we may actually not pay any income tax based on these figures or have i missed something obvious?
I think anything over this amount of combined wage and we pay at a higher rate of 27%
Initially i was not aware of this relief and was discounting the job offer as i could not see the wages meeting the high cost of living especially where rents are concerned but without the burden of income tax it may well be possible
We do own property in Uk and plan to rent out if i am offered the job and relocate whether that has a bearing on matters
Also my partner is French National
many thanks in adv
D