Precision Full-Wave Peak Detector component values
With the capacitors available, you can produce a value of \$C_1 = 0.2 \, \mu F \$ by connecting 5 capacitors of \$ 1 \, \mu F \$ in series. If they have a polarity then it's advisable to alternate those. For \$C_2\$ you can put 2 of \$ 1 \, \mu F \$ in series. Again, if they have a polarity, connected their negative terminals together.

Anyway, for \$ C_1 \$ it won't hurt to take just 1 piece of \$ 1 \, \mu F \$ instead of \$ 0.2 \, \mu F \$.

I would stick to the value of \$ C_2 \$ however, as it forms a low-pass filter in combination with \$ R_6 \$. If on the other hand you insist in using only 1 capacitor, you could change \$ C_2 \$ into \$ 1 \, \mu F \$ while halving \$ R_6 \$ into \$ 500 \, \Omega \$ in order to preserve the value of the existing time constant.