Interaction of property sale gains with gains and losses from share sales when calculating CGT

Say in 18/19 you have income of £20k, gain of £100k from property, £30k share gains and £10k share losses. Am I right in that you can order these gains and losses such that the property gains can fill first the annual exempt amount and the share losses can be offset against the property gains rather than having to be netted off the share gains, as follows:

Property cgt at basic rate = £46,350 - £20k * 18% = £4,743
Property cgt at higher rate = £100k - (£46,350 - £20k) - £11,700 - £10k * 28% = £14,546
Share gains cgt at higher rate = £30k * 20% = £6k
TOTAL DUE = £25,289

Or do you have to for example net the share losses of the share gains first such that the calc would be:

Property cgt at basic rate = £46,350 - £20k * 18% = £4,743
Property cgt at higher rate = £100k - (£46,350 - £20k) - £11,700 * 28% = £17,346
Share gains cgt at higher rate = £20k * 20% = £4K
TOTAL DUE = £26,089

Other than crystallising any share losses before tax year end, maximising pension contributions to give more basic rate band room and use of tax efficient vehicles like EIS, are there any other ways to minimise cgt tax in the above scenario?

(In theory, assuming my first calc is correct above, you could arbitrage the difference between share and property cgt rates to lock in a certain 4% of any share gains and losses by buying and later selling a share and hedging it with a corresponding short spread bet with a hedge ratio of 76%. But in practice this is unlikely to be beneficial since even a 10% movement would only gain you 0.4% which would likely be more than offset by transaction costs.)