On an individual level one may decide whatever the hell one wants to decide but if you're going to decide something at a collective level I can't think of any alternative to the 'Democratic Process' !
The way I see it, you've got two options :
(i) Sell the idea of 'Kashmir as being a prosperous & peaceful part of India with all of the grievances & the alleged grievances of the Local Populace addressed' so that if a Plebiscite does take place, the Majority of the People of Kashmir & by default Muslims, vote for India !
(ii) Because Democracy doesn't mean 'Consensus' & you think that the Non Muslim Minorities in Kashmir would loose out on their ambition for Kashmir's future solely on the basis of numerical inferiority, you could use your bargaining power in the present to enact a solution that as more acceptable to you ! Of the top of my head :
(a) A dismemberment of Kashmir & the absorption of the Jammu & Ladakh into the Union of India as a separate State ! Naturally neither Pakistan nor the UN would accept that but right now India's strategic & economic nuisance value allows it to get away with Murder - So why not use it ?
(b) Agree to a Plebiscite on Kashmir but make it contingent on the different Administrative Units of Kashmir (GB, AJK, Jammu, Kashmir Valley, Ladakh etc.) be given the option of deciding their fate as opposed to the whole State of Jammu & Kashmir ! But I don't think that India would be willing to negotiate that either seeing that India doesn't gain anything on a 'Net' basis from it & would possibly end up loosing the Kashmir Valley to Independence or to a lesser extent Pakistan, as a result !
But of course all of this is 'extremely theoretical' !