provided the following conditions are met:— the income of the purchaser for the 12 months that follow, excluding the income provided for in this section, does not exceed the amount referred to in subparagraph 1 hereinbefore;
— the purchaser makes an application to the financial institution to that effect, accompanied with a declaration in conformity to the one prescribed in Schedule 0.5 and his written undertaking to request a suspension of payments as soon as his income, excluding the income provided for in this section, reaches the amount referred to in subparagraph 1 hereinbefore;
— the purchaser was less than 54 years of age at the end of the year that precedes his application.