Bro,
I understand your pain, my 2 points.
1. Plan your on your own way, if your gf cannot wait then sayonara bcos you both are not aiming to get a child so as long you already decided to be with her then her bio clock is not an issue d. Marriage is just a legal term.
2. If i were in your shoes, i would seriously consider whether want to continue with the marriage with your gf since she do not support or understand you. From your story, she needs you more than you need her so she should be more understanding and support in her own way like telling her parents that you have everything plan so chill and not telling ' Hey, my parents say this d, how ? Sometimes, the girl's parents is pressure by their relatives and frens therefore stating the those to manipulate you into marriage. Must see everything overall.
Furthermore, is your gf only child ? got other siblings ? all this must be taken to account. If your gf does not understand the current market situation and reckon you need to do fancy wedding and pay for everything then sooner or later GG.
I have a fren paid 35k wedding dowry and that is excluded from the wedding expenses which he need to fork out. Ok, he is well to do, earning good money so no problem. Married for 2 years, family problems comes. Siblings problems, family dinners, events whereby they all looking at my fren to foot the bill, why ? bcos he is able and already family. Tell the wife and the wife turn on him saying you don't love me anymore, small money wanna kira and all that crap. At the end divorce and have bitter battle for the kids.
Fren all marriages hv risk lah. All marriages hv arguments and obstacles. No such thing as blissful marriages.
If ts want perfect one he be single for life. Does not exist.
Ultimately ts must build thresholds and find out if this rship is worthwhile. All marriages hv risk of divorce.